T Cells in Nonlymphoid Tissues Give Rise to Lymph-Node-Resident Memory T Cells.
Immunity
; 48(2): 327-338.e5, 2018 02 20.
Article
in En
| MEDLINE
| ID: mdl-29466758
ABSTRACT
Immunosurveillance of secondary lymphoid organs (SLO) is performed by central memory T cells that recirculate through blood. Resident memory T (Trm) cells remain parked in nonlymphoid tissues and often stably express CD69. We recently identified Trm cells within SLO, but the origin and phenotype of these cells remains unclear. Using parabiosis of "dirty" mice, we found that CD69 expression is insufficient to infer stable residence of SLO Trm cells. Restimulation of nonlymphoid memory CD8+ T cells within the skin or mucosa resulted in a substantial increase in bona fide Trm cells specifically within draining lymph nodes. SLO Trm cells derived from emigrants from nonlymphoid tissues and shared some transcriptional and phenotypic signatures associated with nonlymphoid Trm cells. These data indicate that nonlymphoid cells can give rise to SLO Trm cells and suggest vaccination strategies by which memory CD8+ T cell immunosurveillance can be regionalized to specific lymph nodes.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
CD8-Positive T-Lymphocytes
/
Immunologic Memory
/
Lymph Nodes
Limits:
Animals
Language:
En
Journal:
Immunity
Journal subject:
ALERGIA E IMUNOLOGIA
Year:
2018
Document type:
Article
Affiliation country:
Estados Unidos